CN204287391U - High-tension cable shelf depreciation acquisition system - Google Patents
High-tension cable shelf depreciation acquisition system Download PDFInfo
- Publication number
- CN204287391U CN204287391U CN201420693795.4U CN201420693795U CN204287391U CN 204287391 U CN204287391 U CN 204287391U CN 201420693795 U CN201420693795 U CN 201420693795U CN 204287391 U CN204287391 U CN 204287391U
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- Prior art keywords
- shelf depreciation
- tension cable
- acquisition system
- single channel
- signal acquisition
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- Expired - Fee Related
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- 238000002955 isolation Methods 0.000 claims abstract description 22
- 239000013307 optical fiber Substances 0.000 claims abstract description 20
- 239000000835 fiber Substances 0.000 claims description 20
- 230000003287 optical effect Effects 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 4
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical group C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000006854 communication Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The utility model provides a kind of high-tension cable shelf depreciation acquisition system, comprise: three groups of checkout equipments and three group single channel shelf depreciation collecting devices connecting corresponding to described three groups of checkout equipments, each group single channel shelf depreciation collecting device comprises: isolating transformer, Switching Power Supply, signal acquisition circuit and optical fiber component; Each group checkout equipment connects with the signal acquisition circuit in corresponding one group of single channel shelf depreciation collecting device; Wherein, described isolating transformer is connected to the input end of described Switching Power Supply, and the output terminal of described Switching Power Supply is connected with described signal acquisition circuit; Described signal acquisition circuit is connected by the signal acquisition circuit in described optical fiber component and other two groups of single channel shelf depreciation collecting devices.The high-tension cable shelf depreciation acquisition system that the utility model provides can improve the electrical isolation grade of shelf depreciation collecting device, avoids high-tension cable shelf depreciation acquisition system on the impact of the electrical isolation class requirement of cable itself.
Description
Technical field
The utility model relates to power technology, particularly relates to a kind of high-tension cable shelf depreciation acquisition system.
Background technology
In electric system, high-tension cable, as its important ingredient, is related to the safety and reliability of whole electric system.At the run duration of electric system, need to monitor the indices of high-tension cable, a kind of monitoring mode be most widely used is partial discharge monitoring mode, comprises and is interrupted monitoring and on-line monitoring.
For on-line monitoring mode, need to adopt shelf depreciation acquisition system to carry out signals collecting to three-phase alternating current high-tension cable.Shelf depreciation acquisition system generally includes three groups of sensors and three groups of single channel shelf depreciation collecting devices, for carrying out signals collecting to threephase cable.Wherein, the signal output part of sensor connects with corresponding single channel shelf depreciation collecting device, processes for the signal detected is supplied to this collecting device.In existing acquisition system; each collecting device is powered by same power circuit; and between each collecting device, adopt data line to carry out data communication by electric signal; in signal acquisition process; power circuit and communication line all can reduce the electrical isolation grade of high-tension cable itself and shelf depreciation collecting device ground protection, have impact on the stability of shelf depreciation acquisition system.
Utility model content
The utility model provides a kind of high-tension cable shelf depreciation acquisition system, for improving the electrical isolation grade of shelf depreciation collecting device.
The utility model embodiment provides a kind of high-tension cable shelf depreciation acquisition system, comprise: three groups of checkout equipments and three group single channel shelf depreciation collecting devices connecting corresponding to described three groups of checkout equipments, each group single channel shelf depreciation collecting device comprises: isolating transformer, Switching Power Supply, signal acquisition circuit and optical fiber component; Each group checkout equipment connects with the signal acquisition circuit in corresponding one group of single channel shelf depreciation collecting device;
Wherein, described isolating transformer is connected to the input end of described Switching Power Supply, and the output terminal of described Switching Power Supply is connected with described signal acquisition circuit; Described signal acquisition circuit is connected by the signal acquisition circuit in described optical fiber component and other two groups of single channel shelf depreciation collecting devices.
High-tension cable shelf depreciation acquisition system as above, each is organized described single channel shelf depreciation collecting device and is arranged in a casing;
Described bottom half is provided with insulating base, and described single channel shelf depreciation collecting device is arranged on described insulating base.
High-tension cable shelf depreciation acquisition system as above, described insulating base is epoxy resins insulation plate.
High-tension cable shelf depreciation acquisition system as above, the distance between described insulating base and described bottom half is at least 5cm.
High-tension cable shelf depreciation acquisition system as above, the thickness of described insulating base is at least 2cm.
High-tension cable shelf depreciation acquisition system as above, the distance between described isolating transformer, Switching Power Supply, signal acquisition circuit and optical fiber component and described box body wall is all at least 10cm.
High-tension cable shelf depreciation acquisition system as above, the isolation voltage between the primary coil of described isolating transformer and secondary coil is at least 10kV.
High-tension cable shelf depreciation acquisition system as above, described optical fiber component comprises connection line of optic fibre and fiber optical transceiver, and described fiber optical transceiver is connected with described signal acquisition circuit, and described connection line of optic fibre is connected between two fiber optical transceivers.
High-tension cable shelf depreciation acquisition system as above, described checkout equipment is sensor, and the isolation voltage between the primary coil of described sensor and secondary coil is at least 1000kV.
High-tension cable shelf depreciation acquisition system as above, described casing is cast aluminium casing.
The technical scheme that the utility model embodiment provides arranges isolating transformer by the input end in Switching Power Supply, and adopt optical fiber component to realize carrying out data communication between each signal acquisition circuit, existing shelf depreciation acquisition system can be solved and power and the mode adopting electric signal to carry out communicating and reduce the problem of electrical isolation grade owing to there is same power circuit.In the technical scheme that the present embodiment adopts; owing to there is not electric signal in optical fiber communication process; therefore can not impact the electrical isolation grade of shelf depreciation collecting device ground protection; and adopt isolating transformer can also improve electrical isolation grade; can meet when carrying out measurement of partial discharge; high_voltage isolation requirement between threephase cable and between each phase and ground; also improve the stability of shelf depreciation acquisition system, more effectively improve the system robustness of shelf depreciation acquisition system.
Accompanying drawing explanation
The structural representation of the high-tension cable shelf depreciation acquisition system that Fig. 1 provides for the utility model embodiment;
The vertical view of casing in the high-tension cable shelf depreciation acquisition system that Fig. 2 provides for the utility model embodiment;
The front view of casing in the high-tension cable shelf depreciation acquisition system that Fig. 3 provides for the utility model embodiment.
Embodiment
The structural representation of the high-tension cable shelf depreciation acquisition system that Fig. 1 provides for the utility model embodiment.As shown in Figure 1, this acquisition system can comprise: three groups of checkout equipments 1 and with three groups of corresponding three groups of single channel shelf depreciation collecting devices 2 connected of checkout equipment 1, each group single channel shelf depreciation collecting device 2 comprises: isolating transformer 21, Switching Power Supply 22, signal acquisition circuit 23 and optical fiber component 24.
Wherein, isolating transformer 21 is connected to the input end of Switching Power Supply 22, and the output terminal of Switching Power Supply 22 is connected with signal acquisition circuit 23.Signal acquisition circuit 23 is connected by the signal acquisition circuit 23 in optical fiber component 24 and other two groups of single channel shelf depreciation collecting devices 2.
Concrete, the primary coil of the isolating transformer 21 in each group is connected with the maintenance power box 25 in electric system, receive 220V ac supply signal from maintenance power box 25, the secondary coil of isolating transformer 21 is connected with the input end of the Switching Power Supply 22 in same group.220V ac supply signal is converted to the working power required for signal acquisition circuit 23 by Switching Power Supply 22, such as direct current 12V power supply signal, and is supplied to the signal acquisition circuit 23 in same group.
In addition, the test side of checkout equipment 1 can be arranged on cable splice position, for detection streamer local discharge signal, the signal output part of checkout equipment 1 connects with the signal acquisition circuit 23 in corresponding group, and the local discharge signal collected is sent to signal acquisition circuit 23.Signal acquisition circuit 23 is by carrying out data communication between optical fiber component 24 and all the other two signal acquisition circuits 23.
The technical scheme that the present embodiment provides arranges isolating transformer by the input end in Switching Power Supply, and adopt optical fiber component to realize carrying out data communication between each signal acquisition circuit, existing shelf depreciation acquisition system can be solved and power and the mode adopting electric signal to carry out communicating and reduce the problem of electrical isolation grade owing to there is same power circuit.In the technical scheme that the present embodiment adopts, owing to there is not electric signal in optical fiber communication process, therefore can not impact the electrical isolation grade of shelf depreciation collecting device ground protection, and adopt isolating transformer the operating voltage of the maintenance power supply in electric system and signal acquisition circuit can also to be kept apart, and eliminate the problem of power ground, improve electrical isolation grade, can meet when carrying out measurement of partial discharge, high_voltage isolation requirement between threephase cable and between each phase and ground, also improve the stability of shelf depreciation acquisition system, more effectively improve the system robustness of shelf depreciation acquisition system.
The vertical view of casing in the high-tension cable shelf depreciation acquisition system that Fig. 2 provides for the utility model embodiment, the front view of casing in the high-tension cable shelf depreciation acquisition system that Fig. 3 provides for the utility model embodiment.As shown in Figures 2 and 3, on the basis of technique scheme, each can be organized single channel shelf depreciation collecting device 2 and be arranged in a casing 3, this casing 3 is made up of metal material, such as: casing 3 can be cast aluminium casing.Adopt casing 3 to be kept apart with other single channel shelf depreciation collecting device 2 organized by each group single channel shelf depreciation collecting device 2, also keep apart with each electrical equipment of casing 3 outside, be also conducive to improving electrical isolation grade.Casing 3 is provided with case lid 5, covers on casing 3.
Can be provided with insulating base 4 in the bottom of casing 3, each device in single channel shelf depreciation collecting device 2 is bolted on insulating base 4.Employing insulating base 4 can increase the distance in single channel shelf depreciation collecting device 2 between each device and casing 3, the creepage distance between casing 3 and each device can be improved further, also be conducive to improving the class of insulation, further raising electrical isolation grade, improves the security of whole collecting device.
Above-mentioned insulating base 4 can adopt insulating material conventional in prior art to make, such as acrylic board, epoxy resins insulation plate.Consider from the insulating property of material, the present embodiment preferably adopts high voltage bearing epoxy resins insulation plate as insulating base 4, and its thickness h is at least 2cm, and insulating base 4 is thicker, is more conducive to improving electrical isolation grade.
In order to improve the creepage distance in single channel shelf depreciation collecting device 2 between each device and casing 3 further, can adopt thru-bolt 6 that insulating base 4 is fixed on the bottom of casing 3, being at least 5cm to make insulating base 4 with the distance L1 bottom casing 3.Can also by device each in casing 3, as the distance L2 between isolating transformer 21, Switching Power Supply 22, signal acquisition circuit 23 and optical fiber component 24 and casing 3 sidewall is all set at least 10cm.
Moreover above-mentioned isolating transformer 21 preferably adopts the isolation voltage between primary coil and secondary coil to be at least the isolating transformer of 10kV, equally also can improve electrical isolation grade.In addition, the checkout equipment 1 adopted in the present embodiment can adopt high frequency sensors conventional in prior art, and the isolation voltage between its primary coil and secondary coil is at least 1000kV.
In addition, above-mentioned optical fiber component 24 specifically can comprise connection line of optic fibre (not shown) and fiber optical transceiver (not shown), wherein, fiber optical transceiver is connected with signal acquisition circuit 23, and connection line of optic fibre is connected between two fiber optical transceivers.Fiber optical transceiver is for realizing the conversion between light signal and electric signal.The fiber optical transceiver that those skilled in the art can select multimode optical fiber transmission mode corresponding and connection line of optic fibre, such as, be suitable for fiber optical transceiver and the connection line of optic fibre of 850nm, for transmitting multiple signal, improves signal transmission rate.
In the present embodiment carry out Partial Discharge Detection high-tension cable can for twisted polyethylene cable, be the double layer screen high-tension cable of protective metal shell in single core ribbon.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (10)
1. a high-tension cable shelf depreciation acquisition system, it is characterized in that, comprise: three groups of checkout equipments and three group single channel shelf depreciation collecting devices connecting corresponding to described three groups of checkout equipments, each group single channel shelf depreciation collecting device comprises: isolating transformer, Switching Power Supply, signal acquisition circuit and optical fiber component; Each group checkout equipment connects with the signal acquisition circuit in corresponding one group of single channel shelf depreciation collecting device;
Wherein, described isolating transformer is connected to the input end of described Switching Power Supply, and the output terminal of described Switching Power Supply is connected with described signal acquisition circuit; Described signal acquisition circuit is connected by the signal acquisition circuit in described optical fiber component and other two groups of single channel shelf depreciation collecting devices.
2. high-tension cable shelf depreciation acquisition system according to claim 1, is characterized in that, each is organized described single channel shelf depreciation collecting device and is arranged in a casing;
Described bottom half is provided with insulating base, and described single channel shelf depreciation collecting device is arranged on described insulating base.
3. high-tension cable shelf depreciation acquisition system according to claim 2, is characterized in that, described insulating base is epoxy resins insulation plate.
4. high-tension cable shelf depreciation acquisition system according to claim 3, it is characterized in that, the distance between described insulating base and described bottom half is at least 5cm.
5. high-tension cable shelf depreciation acquisition system according to claim 3, it is characterized in that, the thickness of described insulating base is at least 2cm.
6. high-tension cable shelf depreciation acquisition system according to claim 2, it is characterized in that, the distance between described isolating transformer, Switching Power Supply, signal acquisition circuit and optical fiber component and described box body wall is all at least 10cm.
7. high-tension cable shelf depreciation acquisition system according to claim 1, it is characterized in that, the isolation voltage between the primary coil of described isolating transformer and secondary coil is at least 10kV.
8. high-tension cable shelf depreciation acquisition system according to claim 1, it is characterized in that, described optical fiber component comprises connection line of optic fibre and fiber optical transceiver, and described fiber optical transceiver is connected with described signal acquisition circuit, and described connection line of optic fibre is connected between two fiber optical transceivers.
9. high-tension cable shelf depreciation acquisition system according to claim 1, is characterized in that, described checkout equipment is sensor, and the isolation voltage between the primary coil of described sensor and secondary coil is at least 1000kV.
10. the high-tension cable shelf depreciation acquisition system according to any one of claim 2-6, is characterized in that, described casing is cast aluminium casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420693795.4U CN204287391U (en) | 2014-11-18 | 2014-11-18 | High-tension cable shelf depreciation acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420693795.4U CN204287391U (en) | 2014-11-18 | 2014-11-18 | High-tension cable shelf depreciation acquisition system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204287391U true CN204287391U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420693795.4U Expired - Fee Related CN204287391U (en) | 2014-11-18 | 2014-11-18 | High-tension cable shelf depreciation acquisition system |
Country Status (1)
| Country | Link |
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| CN (1) | CN204287391U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110865289A (en) * | 2019-12-26 | 2020-03-06 | 中信重工开诚智能装备有限公司 | High-voltage explosion-proof frequency converter output side long cable partial discharge detection device |
-
2014
- 2014-11-18 CN CN201420693795.4U patent/CN204287391U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110865289A (en) * | 2019-12-26 | 2020-03-06 | 中信重工开诚智能装备有限公司 | High-voltage explosion-proof frequency converter output side long cable partial discharge detection device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 |
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| CF01 | Termination of patent right due to non-payment of annual fee |